package com.assessment.dto;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.springframework.data.jpa.domain.Specification;
import org.springframework.util.StringUtils;

import com.assessment.entity.AssessmentTemplate;


public class AssessmentTemplateDTO 
{
	private Long id;
	private String name;
	private Integer examine;

	public Long getId() {
		return id;
	}
	public String getName() {
		return name;
	}
	public Integer getExamine() {
		return examine;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public void setName(String name) {
		this.name = name;
	}
	public void setExamine(Integer examine) {
		this.examine = examine;
	}
		

	
	public static Specification<AssessmentTemplate> getSpecification( final AssessmentTemplateDTO assessmentTemplateDTO)
	{
		Specification<AssessmentTemplate> spec = new Specification<AssessmentTemplate>() {
			public Predicate toPredicate(Root<AssessmentTemplate> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
				//1.Predicate查询条件集合
				 List<Predicate> list = new ArrayList<Predicate>(); 
				 
				//2.根据 QueryDTO数据字段的值进行判断以及条件的组装
				 if(null != assessmentTemplateDTO && !StringUtils.isEmpty(assessmentTemplateDTO.getName())) {
					 Predicate  p1 =  cb.like(root.get("name").as(String.class),"%"+ assessmentTemplateDTO.getName() + "%");
					 list.add(p1);
				 }
				 
				 //3.Predicate查询条件集合的 size 创建对应的Predicate查询条件数组
				 Predicate[] p = new Predicate[list.size()];  
				 //4.CriteriaBuilder的and 函数组装 查询条件数组
				 return cb.and(list.toArray(p));  
			}
		};
		return spec;	
	}
}
